Oligosarcus itau Mirande, Aguilera & Azpelicueta, 2011
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Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) > Characiformes (Characins) > Acestrorhamphidae (American tetras) > Acestrorhamphinae
Etymology: Oligosarcus: Greek, oligos = small + Greek arkos = anus (Ref. 45335).
Etymology: Oligosarcus: Greek, oligos = small + Greek arkos = anus (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range Ecology
Freshwater; benthopelagic. Subtropical
Distribution Territories | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri
South America: Argentina.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Short description Identification keys | Morphology | Morphometrics
Distinguished by having the following combination of characters: two distinct premaxillary rows of teeth; tricuspidate and pentacuspidate teeth on dentary and posterior premaxillary row; presence of a row of 3-4 tricuspidate to conical ectopterygoid teeth; anal fin with v-vi,21-23 anal-fin rays; and 41-42 perforated scales on lateral line.
Body shape (shape guide): fusiform / normal.
Body shape (shape guide): fusiform / normal.
Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Main reference
Upload your references | References | Coordinator | Collaborators
Mirande, J.M., G. Aguilera and M. Azpelicueta, 2011. A threatened new species of Oligosarcus and its phylogenetic relationships, with comments on Astyanacinus (Teleostei: Characidae). Zootaxa 2994:1-20. (Ref. 87714)
IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))
Endangered (EN) (B1ab(iii)+2ab(iii)); Date assessed: 14 December 2020
CITES
Not Evaluated
Threat to humans
Harmless
Human uses
FAO - Publication: search | FishSource |
More information
Trophic ecology
Food items (preys)
Diet composition
Food consumption
Food rations
Predators
Food items (preys)
Diet composition
Food consumption
Food rations
Predators
Ecology
Ecology
Ecology
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
Life cycle
Reproduction
Maturity
Maturity/Gills rel.
Fecundity
Spawning
Spawning aggregations
Eggs
Egg development
Larvae
Larval dynamics
Reproduction
Maturity
Maturity/Gills rel.
Fecundity
Spawning
Spawning aggregations
Eggs
Egg development
Larvae
Larval dynamics
Anatomy
Gill area
Brain
Otolith
Gill area
Brain
Otolith
Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Genetics
Genome
Genetics
Heterozygosity
Heritability
Genetic Diversity
Genome
Genetics
Heterozygosity
Heritability
Genetic Diversity
Human related
Aquaculture systems
Aquaculture profiles
Strains
Ciguatera cases
Stamps, coins, misc.
Aquaculture systems
Aquaculture profiles
Strains
Ciguatera cases
Stamps, coins, misc.
Tools
Special reports
Download XML
Internet sources
AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoobank | Zoological Record
Estimates based on models
|
Phylogenetic diversity index (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.00891 (0.00388 - 0.02045), b=3.10 (2.92 - 3.28), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
|
Trophic level (Ref. 69278) |
4.0 ±0.7 se; based on size and trophs of closest relatives |
|
Resilience (Ref. 120179) |
Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.). |
|
Fishing Vulnerability (Ref. 59153) |
Low to moderate vulnerability (34 of 100). 🛈 |